8 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



2-3 cm. long: flowers 1-3 in each axil, apparently apetalous, stamens 

 4, included; style much less than half the length of capsule, I mm. 

 long, often nearly sessile : capsule globose, 4 mm. diameter, enclosed 

 'by the prominently 8-veined calyx. In wet alkali flats. 

 - T-ske Bowdoin, near Malta, Aug. 25, 1903; Milk River, Aug. 19, 

 "(1853-4), Suckley (Gray Herb.). 



Differs from A. coccinea, Rottb. in its small size, stem not fleshy at 

 base, leaves usually wider and more abrupt at apex and short style. 

 More nearly related to A. Koehnci, Britton, but much smaller, apeta- 

 lous and of different range. The Milk River specimens of Suckley 

 are called A. lati folia, L. by Watson (Bot. Calif. 1:214). A related 

 specimen from the Columbia River, Oregon (Suksdorf), but petal- 

 iferous, is called A. coccinea, Rottb. by Koehne, even though the 

 styles are less than one-fourth the length of the capsule (Gray 

 Herb.). 



ONAGRACE^:. 



Epilobium palustre, L. Mountain near Columbia Falls, Aug. 

 20, 1904, R. S. Williams. 



OEnothera andina, Nutt. ; Sphaerostigma andimim, Walp. ; Ryd- 

 berg, Flora, 281, and various authors; apparently not yet found in 

 Montana. The Blackfoot River, where Nuttall collected it, is in 

 southeastern Idaho. It should occur in this state, as Macoun has 

 it from several localities in Assiniboia, just north. 



OEnothera brachycarpa, Gray. Watson, Rev. Oen., Proc. Atner 

 Acad. 8:586; Coulter, Man. R. M. Bot., 104; Small, Bull. Torr. Bot. 

 Club, 23:183, and others, following Watson, who seems to base his 

 assertion on a specimen in the Gray Herbarium collected in Mon- 

 tana by Winslow J. Howard about 1866, which is corcainly only an 

 rnfruited specimen of OE. caespitosa, Nutt. and is mounted on a sheet 

 with OE. Wrightii, Gray. The two may be easily distinguished by 

 the larger flowers, winged fruit and dense canescence of Oil. bntcJiv- 

 (arpa and the smaller flowers, usually tuberculate, cristate fruit and 

 nearly glabrous leaves of caespitosa. OE. brachycarpa is a much 

 more southern species. 



OEnothera deprcssa, Greene, Pittonia, 2:216. See OE. nniricata be- 

 low, i 



OEnothera muricata, L., Syst. 12 ed, 263; OE. bicnnis mnricata, 

 Lindl., Bot. Reg. t. 1604; OE. deprcssa, Greene, Pittonia, 2: 216; 

 Onagra deprcssa, Small, Bull. Torr. Bot. Club, 23 :i7o; Rydberg, Flora, 



